I already told you why not. Please, stop wasting your time and ours. Read my previous post again.
Open an existing Devanagari font in FontCreator that you have installed (you must have one installed if you can see the glyphs in MSKLC. I don’t because I don’t have a Devanagari font installed) to see how it is mapped, then map your font the same way and it will work with the same keyboard layout.